A high-pressure injection device for oil displacement agent

Abstract

The utility model relates to oil displacement agent injection technical field especially relates to a kind of oil displacement agent high-pressure injection device.The oil displacement agent high-pressure injection device includes high-pressure pump, the output end of high-pressure pump is equipped with the rotary connection's adapter pipe, and the both ends of adapter pipe are equipped with connecting assembly;The both ends of adapter pipe are equipped with the snap ring of fixed connection;The connecting assembly includes connecting half ring, and the connecting half ring is equipped with two and symmetrically distributed.The oil displacement agent high-pressure injection device provided by the utility model can rotate the adapter pipe when connecting the device with the oil injection well, to adjust the position of the external docking port, and thus can improve the flexibility during docking, so as to reduce the inconvenience caused by the device position deviation during pipeline connection.

Description

Technical Field

[0001] This utility model relates to the field of oil displacement agent injection technology, and in particular to an oil displacement agent high-pressure injection device. Background Technology

[0002] High-pressure oil displacement agent injection device refers to a device used in the tertiary oil recovery process of oilfields to inject oil displacement agents (such as polymers, surfactants, alkali solutions, etc.) into the deep underground oil reservoir at a pressure higher than that of the reservoir, in order to improve the ultimate recovery rate of crude oil.

[0003] The injection ports in existing injection devices are generally fixed, and adjusting their position when connecting them to the injection well is relatively complicated, which increases the difficulty of device installation and connection, and consequently affects the overall user experience of the device.

[0004] Therefore, it is necessary to provide a new high-pressure injection device for oil displacement agents to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a high-pressure injection device for oil displacement agents.

[0006] The high-pressure injection device for oil displacement agent provided by this utility model includes: a high-pressure pump, the output end of which is provided with a rotatably connected adapter pipe, and both ends of the adapter pipe are provided with connecting components; Both ends of the adapter tube are fitted with retaining rings for fixed connection; The connecting component includes a connecting half-ring, two of which are symmetrically distributed. The connecting half-ring is sleeved on the outside of the retaining ring, and multiple sliding plates are slidably installed inside the connecting half-ring.

[0007] Preferably, the end of the adapter pipe is fitted with a slidably connected positioning ring, the outer wall of the positioning ring abuts against the inner wall of the retaining ring, and both sides of the positioning ring are provided with sealing rubber rings.

[0008] Preferably, a fixedly connected protruding ring is installed on the side of the retaining ring away from the positioning ring, and a groove that matches the protruding ring is formed inside the connecting half-ring at the part opposite to the protruding ring.

[0009] Preferably, the connecting half-ring has multiple sliding grooves inside, and the inside of the sliding grooves abuts against and slides against the outer wall of the slide piece.

[0010] Preferably, the top of the slide plate extends outside the slide groove and is fixedly connected to a connecting rod. The outer wall of the connecting rod extends to the side of the connecting half-ring near the adapter tube and is slidably connected to its interior. A threaded nut is fitted on the outside of the connecting rod.

[0011] Preferably, a plurality of slidingly connected guide rods are inserted into one side of the inner side of the connecting semi-ring, and the ends of the guide rods are fixedly connected to the outer wall of the corresponding slide plate.

[0012] Preferably, the adapter pipe has a zigzag structure.

[0013] Preferably, the opposite surfaces of the two connecting semi-rings in the same group are attracted to each other by magnetic blocks.

[0014] Compared with related technologies, the high-pressure injection device for oil displacement agent provided by this utility model has the following advantages: 1. By setting up a transfer pipe, this utility model allows the transfer pipe to be rotated when connecting the device to the oil injection well, thereby adjusting the position of the external docking port and improving the flexibility of docking. This reduces the inconvenience caused by device position deviation during pipeline connection.

[0015] 2. This utility model connects and fixes the adapter pipe to the pipeline flange in the oil injection well by inserting and pressing. This connection method does not require inserting multiple bolts and nuts one by one along the flange hole. Fixing can be achieved by directly controlling the rotation of the nut. Since the nut is always located on the connecting rod, when it is necessary to disassemble and separate the device, it is only necessary to control the nut to loosen it. There is no need to completely unscrew the nut, which can also reduce the inconvenience caused by the unscrewed nut falling and being lost. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the high-pressure injection device for oil displacement agent provided by this utility model; Figure 2 for Figure 1 The diagram shows a partial cross-sectional view of the connection between the adapter pipe and the connecting assembly. Figure 3 for Figure 2 A partial cross-sectional structural diagram of the connecting component shown; Figure 4 for Figure 2 The diagram shows the structure of the transfer pipe; Figure 5 for Figure 1 The diagram shows the structural connection between the transfer pipe and the external pipeline.

[0017] The following are the labels in the diagram: 1. High-pressure pump; 2. Adaptor pipe; 21. Snap ring; 22. Protruding ring; 3. Connecting assembly; 31. Connecting half ring; 311. Groove; 312. Slide groove; 32. Connecting rod; 33. Sliding plate; 331. Guide rod; 4. Positioning ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] Please see Figures 1 to 5 The present invention provides a high-pressure injection device for displacing oil, which includes a high-pressure pump 1.

[0021] In the embodiments of this utility model, please refer to Figures 1 to 5 The output end of the high-pressure pump 1 is provided with a rotating connecting pipe 2, and both ends of the connecting pipe 2 are provided with connecting components 3; both ends of the connecting pipe 2 are fitted with fixed connecting rings 21; the connecting components 3 include connecting half rings 31, two connecting half rings 31 are provided and symmetrically distributed, the connecting half rings 31 are fitted on the outside of the rings 21, and multiple sliding pieces 33 are slidably installed inside the connecting half rings 31. The connecting pipe 2 has a zigzag structure, and the opposite surfaces of the two connecting half rings 31 in the same group are attracted to each other by magnetic blocks.

[0022] It should be noted that: by setting the zigzag adapter pipe 2, when connecting this device, after the device is moved to the position, the adapter pipe 2 can be rotated as needed, thereby realizing the adjustment of the horizontal and vertical position of the port of the adapter pipe 2. This makes the docking adjustment more flexible when connecting this device to the oil injection well port, thus reducing the inconvenience caused by the device position deviation during pipeline connection. Since the connecting half-rings 31 are attracted to each other by magnetic blocks, it is more convenient to assemble the two connecting half-rings 31 into a complete connecting ring during installation, thereby improving the portability of the subsequent installation and fixing of the adapter pipe 2 by the staff.

[0023] In the embodiments of this utility model, please refer to Figures 1 to 5 The end of the adapter pipe 2 is fitted with a slidingly connected positioning ring 4. The outer wall of the positioning ring 4 abuts against the inner wall of the retaining ring 21. Both sides of the positioning ring 4 are provided with sealing rubber rings. The retaining ring 21 is installed with a fixedly connected protruding ring 22 on the side away from the positioning ring 4. The inner part of the connecting half ring 31 is provided with a groove 311 that matches the protruding ring 22.

[0024] It should be noted that: by setting the sealing rubber rings on both sides of the positioning ring 4, after the installation of this device is completed, the opposing compressive force can cause the sealing rubber rings to be compressed and deformed, thereby filling the gaps at the joint and thus improving the sealing performance of this device after connection. By abutting against the groove 311 and the convex ring 22, the convex ring 22 can connect the connecting half rings 31 on both sides after connection, thereby blocking the unfolding trajectory of the connecting half rings 31 and preventing the connecting half rings 31 from unfolding and falling off after connection. This improves the stability of the connection of this device.

[0025] In the embodiments of this utility model, please refer to Figures 1 to 5 The connecting half-ring 31 has multiple sliding grooves 312 inside, and the inside of the sliding grooves 312 abuts against and slides against the outer wall of the sliding piece 33. The top of the sliding piece 33 extends to the outside of the sliding grooves 312 and is fixedly connected to a connecting rod 32. The outer wall of the connecting rod 32 extends to the side of the connecting half-ring 31 near the adapter tube 2 and slides against its interior. The outside of the connecting rod 32 is fitted with a threaded nut. Multiple slidingly connected guide rods 331 are inserted into one side of the inside of the connecting half-ring 31, and the ends of the guide rods 331 are fixedly connected to the outer wall of the corresponding sliding piece 33.

[0026] It should be noted that by fitting a nut on the outer wall of the connecting rod 32, after the connecting half-ring 31 is fitted, when the nut is tightened, the driving force of the rotating thread structure can pull the connecting rod 32, thereby driving the sliding plate 33 to move. When the sliding plate 33 abuts against the flange of the external pipe, the limiting of the flange and the positioning ring 4 by the sliding plate 33 and the connecting half-ring 31 can prevent the transfer pipe 2 from falling off, thereby achieving a stable connection of this device. By guiding the outer wall of the slide plate 33 away from the connecting rod 32 through the guide rod 331, the stability of the slide plate 33 when moving and when it comes into contact with the flange can be improved.

[0027] The working principle of the high-pressure oil displacement agent injection device provided by this utility model is as follows: When using this device, after it is placed in the required position, it is necessary to connect the device to the pipeline in the injection well. The adapter pipe 2 can be rotated at the oil outlet end of the high-pressure pump 1 as needed. Since the adapter pipe 2 has a zigzag structure, the horizontal and vertical positions of the adapter pipe 2 away from the port of the high-pressure pump 1 can be changed during the rotation of the adapter pipe 2. Therefore, the flexibility of connecting the end of the adapter pipe 2 to the flange in the pipeline in the injection well can be improved. After the end of the adapter pipe 2 is adjusted to the required position, the device can be pushed so that the adapter pipe 2 is inserted into the pipeline connected to the injection well. Then, the positioning ring 4 at the end of the adapter pipe 2 can be rotated so that the protrusion on its side wall can be smoothly inserted into the hole in the connecting pipe flange. The adapter pipe 2 is then driven toward the injection well until the retaining ring 21 on its outer wall is engaged with the outside of the positioning ring 4. The two connecting half rings 31 are then removed and connected to the outside of the adapter pipe 2 and the external connecting pipe flange. At this time, the two connecting half rings 31 can attract each other through the magnetic blocks with opposite magnetic properties on their opposite surfaces, thus forming a complete connecting sleeve on the outside of the connection between the adapter pipe 2 and the external pipe. Next, a wrench can be used to control the nut on the outer wall of the connecting rod 32 to rotate. During this process, the rotating nut can drive the sliding plate 33 through the connecting rod 32. As the sliding plate 33 moves, the distance between the sliding plate 33 and one side of the adapter pipe 2 can be reduced. When the outer wall of the sliding plate 33 abuts against the flange, the driving force of the continuous rotation of the nut can drive the connecting half ring 31 to move. When the connecting half ring 31 slides along the outside of the adapter pipe 2 until the groove 311 inside it abuts against the protruding ring 22 outside the retaining ring 21, the adapter pipe 2 and the external pipe can be squeezed and fixed. Then, the nuts at both ends of the adapter pipe 2 are tightened in sequence to complete the installation of this device. The high-pressure pump 1 can then be fixed to the ground with bolts. By fixing the high-pressure pump 1, the rotation of the zigzag adapter pipe 2 installed by insertion can be avoided, thereby achieving a stable connection of the adapter pipe 2.

[0028] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-pressure injection device for an oil displacement agent, characterized in that, include: A high-pressure pump (1) is provided with a rotatably connected adapter pipe (2) at the output end of the high-pressure pump (1), and both ends of the adapter pipe (2) are provided with connecting components (3). Both ends of the adapter tube (2) are fitted with retaining rings (21) for fixed connection. The connecting component (3) includes a connecting half-ring (31), which has two parts and is symmetrically distributed. The connecting half-ring (31) is sleeved on the outside of the retaining ring (21), and multiple sliding pieces (33) are slidably installed inside the connecting half-ring (31).

2. The high-pressure injection device for oil displacement agent according to claim 1, characterized in that, The end of the adapter pipe (2) is fitted with a slidingly connected positioning ring (4), the outer wall of the positioning ring (4) abuts against the inner wall of the retaining ring (21), and both sides of the positioning ring (4) are provided with sealing rubber rings.

3. The high-pressure injection device for displacing oil agent according to claim 2, characterized in that, The retaining ring (21) is fixedly connected to a protruding ring (22) on the side away from the positioning ring (4), and a groove (311) is provided inside the connecting half ring (31) at the part opposite to the protruding ring (22) to match it.

4. The high-pressure injection device for displacing oil agent according to claim 3, characterized in that, The connecting half-ring (31) has multiple sliding grooves (312) inside, and the inside of the sliding grooves (312) abuts against and slides against the outer wall of the sliding piece (33).

5. The high-pressure injection device for displacing oil agent according to claim 4, characterized in that, The top of the slide plate (33) extends to the outside of the slide groove (312) and is fixedly connected to a connecting rod (32). The outer wall of the connecting rod (32) extends to the side of the connecting half ring (31) near the adapter pipe (2) and is slidably connected to it. The connecting rod (32) is fitted with a threaded nut.

6. The high-pressure injection device for oil displacement agent according to claim 5, characterized in that, Multiple sliding guide rods (331) are inserted into one side of the connecting half-ring (31), and the ends of the guide rods (331) are fixedly connected to the outer wall of the corresponding slide (33).

7. The high-pressure injection device for oil displacement agent according to claim 1, characterized in that, The transfer pipe (2) has a zigzag structure.

8. The high-pressure injection device for oil displacement agent according to claim 1, characterized in that, The opposing surfaces of the two connecting half-rings (31) in the same group are attracted to each other by magnetic blocks.

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